the more I get into the datascience world, the more I have the feeling people working with python will greatly benefit from some building tool like gradle which makes the code easier to maintain, manage dependencies, make it reproducible, use DSL with a statistically typed language (Kotlin), etc etc. It's not uncommon to me to find python projects often broken or very hard to setup for people outside the collaborators.. Looking in this sense, I found PyGradle, which unfortunately isn't maintained anymore. For something maintained, I found this other plugin instead. Also, it looks like the state-of-the-art tool is Poetry What do you think? What's your experience/mileage?

hi, do you know any free, online (hosted) Jupyter server with Kotlin kernel support? Something like https://jupyter.org/try but with Kotlin support (surprisingly, several other languages are supported). I'd like to be able to work on some notebook and then share it with someone

It turned out that we don't have reliable notebook to make it a sample Kotlin notebook at jupyter.github.io/try . If you have such notebook or can contribute - you're welcome. It should include: 1. Some instructions in markdown on how to install and use Kotlin notebooks (with links to the repository) 2. Some usage examples of data manipulation and/or ML libraries 3. Some visualization using LetsPlot / Plotly / other libraries

Multik 0.1 released with complex numbers, new linear algebra methods, improved performance and other features https://blog.jetbrains.com/kotlin/2021/10/multik-0-1-is-out/

The kotlin platform noa-atra has been behind this research on HFT for crypto. More research to come from that stack!

Hello people 🙂 tomorrow at Casus (10am) we are gonna host a presentation followed by a short workshop with @holgerbrandl about Kotlin Automation and Scripting, he's known especially for at KotlinConf '17 and his kscript

Contemplating buying an Apple Macbook M1 (so the one with the ARM CPU), but wondering how it works with Kotlin Data Science & Notebooks. I know there are M1 native JVM's and IDEA, but data science uses typically more native libraries than most JVM applications. Any experience that people want to share?

Hi folks! I'm working on a Python backend for Kotlin. I'm wondering if you'd like to see Kotlin <-> Python interop when it comes to data science. Please share your use cases in #python

Quick dataframe question, is it possible in a notebook to write a dataframe extension method after the dataframe instance has been created based on a parsed CSV file

fun DataFrame<???>.myMethod() = filter { some_column == "Yes" }

So the question is how to get the required type since the dataframe schema is automatically generated based on the data found in the CSV file.

I just noticed by chance, kotlin actually has more stars that python.. lags just 1k behind 😛

Hi! We are thinking of switching Kotlin Jupyter kernel build to JDK 11. Will it hurt the way you are using kernel or its artifacts?

Why doesn't https://kotlinlang.org/docs/data-science-overview.html list datalore as interactive editor? Despite its paywall it has a great and very smooth interface.

Hello all, I apologize I have gone dark for some time. I have been working on multiple endeavors, all exciting. Watch my Twitter for updates on a flight simulation hardware I've been working hard on amongst other things. https://twitter.com/thomasnield76

Also I want to shamelessly plug my upcoming book. I just finished writing the first draft but first 5 chapters are up on O'Reilly. https://www.oreilly.com/library/view/essential-math-for/9781098102920/

What is a good kotlin Multiplateform library for image processing like cropping, resizing, normalize, toTensor ? Is Korim + KMath + MultiK what I need ?

Is DataSpell going to have support for Kotlin?

I was playing around with the new Duration API and I like the 100.days type of extensions. But I noticed that the “.days” type of extensions on numbers are now all defined at the companion object level. From a notebook usage this requires a lot of extra imports if I want to use several of these extensions. Is there a work around for this (I really like to keep imports in a notebook for my users to minimum).

Hi, all. Is there any tip for using Kotlin Spark on Jupyter? Here at work we successfully developed data pipelines using Spark on Kotlin. It has been a great experience, so far. However, we weren’t been able to use it on Jupyter due to some serialization problems.

Hi! I've added a small but maybe useful feature: you will now see completion for the versions of Maven dependencies of a library. Available in the latest version of kernel (

0.11.0.33

). Feedback is welcome

How could we convert reshaped

FloatArray

Back to

BufferedImage

or save it as .jpg

Hey, did anybody try out something like sos-notebook to run python and kotlin code in a notebook? Unfortunately, many libraries or papers still use python...

Join today's Live Webinar "*Object Detection and Image Recognition with Kotlin*". Register here. Agenda: In this webinar, we will explore a deep learning library written in Kotlin, learn how to detect objects of different types in images, and create a Kotlin Web Application using Ktor and KotlinDL that will detect objects in the images.

In letsplot @Igor Alshannikov, is there something like a grid system (similar to bootstrap) to arrange panels (boxplots, lineplots, whatever), when creating an application using javascript as backend?

@Ilya Muradyan What is the idiomatic way to make on kernel library depend on another one. For example, I want to load plotly, tables etc from my custom integration?

Hello guys, I putting my fingers in Jupyter-kotlin, and I take fun ! But I didn’t found any way to parse Date ? Is there any lib that may help me to deal with ? I need to calculate the time between 2 dates !

Hi, a noob question. Is there an easy way to reuse a bit of experimental code between the notebooks? So far I see two options: - publish a (local) library. A bit cumbersome for quick adjustment loops. Good for when this code matures enough in the future. - use a lib descriptor json with a bunch of init/initCell. Kinda OKish, but gets messy quick with multiline extension functions using string interpolation :)

Is there any reason why we cannot print the shape directly ? From what I see it is represented as an IntArray in MultiK code base.